Some tablet PC sensors (e.g. the 0xEC found in the Thinkpad
Yoga) report more than 256 pressure levels and will experience
wraparound unless the full range is read.
Signed-off-by: Jason Gerecke <killert...@gmail.com>
---
drivers/input/tablet/wacom_wac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index 9ff5613..ae1437b 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -1087,7 +1087,7 @@ static int wacom_tpc_pen(struct wacom_wac *wacom)
input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
input_report_abs(input, ABS_X, le16_to_cpup((__le16
*)&data[2]));
input_report_abs(input, ABS_Y, le16_to_cpup((__le16
*)&data[4]));
- input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x01) << 8) |
data[6]);
+ input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x03) << 8) |
data[6]);
input_report_key(input, BTN_TOUCH, data[1] & 0x05);
input_report_key(input, wacom->tool[0], prox);
return 1;
--
1.8.5.3
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